Sounds identical to one I did myself once. IIRC I used bitumen paint as
a cheapo solution, as I knew I'd be selling the place not long afterwards.

Seemed to do the job well enough; I can't vouch for it's longevity but
think if I'd been intending on keeping the property for a long time I'd
have chosen something more durable. Indeed, the purchaser's surveyor
flagged it as a future maintenance issue.

Sounds identical to one I did myself once. IIRC I used bitumen paint as
a cheapo solution, as I knew I'd be selling the place not long afterwards.

Seemed to do the job well enough; I can't vouch for it's longevity but
think if I'd been intending on keeping the property for a long time I'd
have chosen something more durable. Indeed, the purchaser's surveyor
flagged it as a future maintenance issue.

David
yeah. Concrete itself is pretty impervious, depending on the grade.

Anything that soaks in a bit of a plasticky or tarry nature will improve
it immensely.

Sounds identical to one I did myself once. IIRC I used bitumen paint as
a cheapo solution, as I knew I'd be selling the place not long
afterwards.

Seemed to do the job well enough; I can't vouch for it's longevity but
think if I'd been intending on keeping the property for a long time I'd
have chosen something more durable. Indeed, the purchaser's surveyor
flagged it as a future maintenance issue.

David
yeah. Concrete itself is pretty impervious, depending on the grade.

Anything that soaks in a bit of a plasticky or tarry nature will improve
it immensely.

Probably one of those render waterproofers will do.

good thoughts I will investigate further as I think that the problem is a
crack in the concrete

Is there any provision for the rainwater to drain off or does it just
puddle up and stay trapped?
is there a fall?

-- yep slight fall to the back with gutter and downpipe

Regards

Having read all the other posts since my reply this am, I would also
recommend the cromapol product or there's another called aquapol, I
think... Check out JJ Roofing supplies or Wedge roofing, but again, it's
not cheap- about £90 a tin retail, £60 trade. For a cheaper way of
remedying it as a trial.... If you can find the crack get a tube of Sika
Flexhttp://m.screwfix.com/details.htm?id=79250
and use that to fill the joint, it's great stuff.

Hth
Deano

--
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